Hublot Shaped Spirit of Big Bang Tourbillon Carbon Sky Blue 42mm 645.QL.5117.RX - BRAND NEW

The Hublot Spirit of Big Bang Tourbillon Carbon Sky Blue 42mm — reference 645.QL.5117.RX — represents one of the most visually distinctive expressions within Hublot's celebrated lineup. Introduced as an evolution of the iconic Big Bang family, the Spirit of Big Bang departs from the round case format in favour of a tonneau shape that pays homage to mid-century watchmaking while projecting an unmistakably contemporary attitude. The 42mm size strikes an ideal balance between legibility and wearability, making the Spirit of Big Bang equally compelling on a variety of wrist sizes.

Carbon fibre is the defining material of this reference. The case, constructed entirely in carbon fibre, delivers exceptional rigidity and structural integrity while keeping the watch remarkably light on the wrist — a hallmark advantage of high-tech composite materials in horology. The carbon fibre bezel echoes the case material, creating a seamless, monolithic aesthetic that is both purposeful and visually cohesive. Hublot has long been an industry leader in applying advanced materials to watchmaking, and this reference exemplifies that philosophy at its most refined.

Against the structured carbon architecture, the sky blue dial introduces a luminous colour contrast that elevates the entire composition. The openworked construction of the dial allows the mechanical heart of the watch — the tourbillon — to remain fully visible, turning the complication into a centrepiece of the design rather than a hidden technical achievement. The interplay between the cool blue tones and the dark carbon fibre creates a depth and dynamism that few watches at any price point can match.

The tourbillon complication at the core of this piece is among the most revered in all of mechanical watchmaking. Originally devised to counteract the effects of gravity on a watch's accuracy, the tourbillon today represents the pinnacle of the watchmaker's craft — a rotating cage that houses the escapement and balance wheel, turning continuously to average out positional errors. Wearing a tourbillon is as much an appreciation of horological artistry as it is a statement of personal taste and discernment.

A black rubber strap completes the package, reinforcing the sporty, high-performance character that has made the Spirit of Big Bang a favourite among collectors who refuse to choose between technical sophistication and wearable style. The rubber strap pairs naturally with the carbon fibre case, maintaining the watch's lightweight character throughout and offering everyday comfort without sacrificing a gram of presence.

At Bizak & Co., this reference 645.QL.5117.RX is offered brand new, representing an exceptional opportunity to acquire a high-complication Hublot in pristine, unworn condition. Our team of specialists is on hand to answer any questions and to guide you through the purchase process. Visit bizakandco.com to buy this Hublot Spirit of Big Bang Tourbillon Carbon Sky Blue online or reach out directly for pricing and availability — we are committed to offering the best price on every piece in our collection.